plperlu function

[Nicola.Scioscia@xxxxxxxxxxx]

Hello

I am an absolute beginner in postgres
and apologize in advance for a possible silly question.
I am running postgreSQL 8.0 on a Suse
Linux box

I need to write a function in a postgres
database that performs an extraction on three archives and writes the extracted
records in a text file.
I added the support for the "plperlu"
language. I have defined the function in the following way:


CREATE FUNCTION sampleExtraction() RETURNS
boolean AS $$

    // function implementation

$$ LANGUAGE plperlu IMMUTABLE STRICT;


I will launch this function manually
when needed. My questions are:

-  is this feasible in this way
?  
- how can I launch/execute the function?
Do I need to write a suitable SELECT or is there an alternative way? Is
"SELECT sampleExtraction();" correct?

Thanks in advance for your kind help

Best regards

Nicola Scioscia